Here's what rhymes with defossum.
possum blossom opossum Words that almost rhyme with defossum
soften caution cation rosin libation precaution tryptophan herniation microcosm macrocosm calumniation solemn forum foursome bottom column decorum balsam dorsum sorghum bonum flotsam slalom carom boredom mortem quorum condom nostrum rostrum wampum stardom thraldom thralldom cockscomb problem quantum drachm postpartum falciparum metronome gastronome sugarplum